Apparatus for crushing and grinding malt and other vegetable substances



(No Model 2 Sheets-Sheet 1. E. KAUFFELD.

APPARATUS FOR GRUSHING AND GRINDING MALT AND OTHER VEGETABLE SUBSTANCES.

Patent ed Mar. 81, 1885.

ATTORNEYJ' N. PEYEHS, Phmoiilhngnphnn Washington. ov a (N0 ModeL) 2 Sheets-Sheet 2.

.E. KAUPFELD. APPARATUS FOR GRUSHING AND'GEINDING MALT AND OTHER VEGETABLE SUBSTANCES.

No. 814,850. Patented Mar. 31, 1885.

W/T/VESSES MUM/V701? N. PETERS. Phomidhogmplmr, Washinglom D. C,

U ITED STATES PATENT OEEIcE.

ELIAS KAUFFELD, OF PITTSBURG, PENNSYLVANIA.

APPARATUS FOR CRUSHING AND GRINDING MALT AND OTHER VEGETABLE SUBSTANCES.

EPECIFICATIOBT forming part of Letters Patent No. 314,850, dated March 31, 1885.

Application filed June 20, 1884. (No model.)

To all whom it may concern.-

Be it known that I, ELIAS KAUFFELD, of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Apparatus mentation.

Heretofore in the process of distilling it has been customary to provide a mill for grinding malt in additionto the apparatus for reducing'the grain or other substance to a pulp condition.

My invention consists in combining with the boiler, in which the vegetable substances are softened by the action of steam, a grinding and crushing device adapted to be used alternately to reduce the vegetable matter to pulp and to grind malt.

My invention further consists in the novel construction of the grinding apparatus, as hereinafter fully described.

Referring to the accompanying drawings, Figure 1 is a sectional view of a mash or vegetable boiler with my improvements attached,

the mash-tub being shown in elevation; Fig. 2, a horizontal section of the crushing and grinding device, and Fig. 3 a vertical section of the same. Fig. 4 is a perspective view of a detail. i

As the boiler and its appurtenances are of the ordinary construction and form no part of my improvement, I deem it unnecessary to particularly describe the same.

Referring to Fig. 1 of the drawings, A indicates the boiler, and a a a the various steampipes connected thereto.

B designates the drum or casing of the grinding and crushing device, opening at its upper end into the mash-boiler A, where it is provided with a gate, A,and at its lower end into an elbow, G. Said elbow has an opening, 0, at its lower end, closed by a plug, 0 as shown, and a branch, D, at one side leads to the mashtub F through the escape-pipe E.

G H are the grinding and cutting rolls, arranged within case B and operated by pulley I.

I will now particularly describe the construction and arrangement of my improved grinding and crushing device. Said device comprises two grooved rollers, G and H, which are journaled in the sides of the drum B. The grooves in these rolls are out very deep and their sides are at an acute angle, so as to leave sharp cutting-edges g h between, the cuttingedges of one roll registering with the grooves of the other and leaving a very narrow space between. The roll G is movable toward and from roll H, the bearing of said roll G having.

a slight range of motion horizontally in the casing B. Blocks of rubber g g are placed at each end of the journal-bearing of said roll G, so as to preserve a tight joint, and the said roll is adjusted, when desired, by means of screws K and hand-wheels L on the ends of said screws. The journals of roll H are fixed in the casing B, and the shaft of said rolls projects out through its bearing at each side, and is provided with a pulley or pulleys, by means of which motion is communicated to said roll.

M and N designate plates which are secured inside the drum or casing B to flanges h N,

by bolts M N above the rolls G H and project in slightly toward the centers of the rolls, so as to guide the material to be acted upon to the space between the rolls and to prevent any of it from passing down behind the same. These plates have their lower edges serrated to correspond to the shape of the grooves in the rolls, and they fit down tightly upon the latter, so as to prevent any material from passing beneath their edges. The plate M,

which is above the movable roll G, is bolted to the flange M. at its upper end by bolts run ning through slots, so as to be adjustable to movement of the roll and be always in contact therewith. An opening, 0, is formed in the side of the drum B, and is provided with a removable cover, the object of such opening being to permit inspection of the rolls and the ready removal of any obstruct-ion which might accidentally find its way to the rollers.

Operation: The boiler A being filled and its contents reduced in the usual manner, the gate A is opened and motion is communicated to the rollers through the medium of the pulley I. The material in the boiler then passes through between the rol s, which cut and crush it, reducing it to the desired pulpy condition, and the material then passes off into the mashtub through the escape-pipe E.

WVhen it is desired to use the apparatus for grinding malt,the steam is turned off from the vessel A and the plug 0 removed from opening 0. The malt is then introduced into the vessel A and passes through gate A into the drum B, motion being communicated to the rolls as before. The ground malt passes out through the opening 0.

The advantages of the improvements are, that the peculiar construction of the rolls permits of the device being used to cut and reduce vegetable matter and also grind malt.

the interior of the drum-and forming a supplementary hopper, one ofthe said plates being adj list-able, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in 40 presenceof two witnesses.

ELIAS KAUFFELD.

lVitness es:

J os. B. OoNNoLLY, LOUIS MOESER. 

